Automatic substation.



2 SHEETS-SHEET Mentor: .Reis W. Pen Deli,

Ch@ .b5

z/ my?" dir@ ctiomeg.

n w1iTED STATES PATENT oFFioE.

CHRLES W. PEN DELL, OF CHICAGO, ILLINOIS, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

AUTOMATIC SUBSTATON,

Application fxle 'May-13,

To @Z5 'whom it maj concern:

Ee it known that L Customs lV. PEN SELL, e citizen ot' the United States, residing at C nongo, inthe county of CoolnState 6 of lllino' have invented certain new and useful improvements in- Autoinatie Substations, ot' which the following is a specification.

My inrention relates to a supply ot' power for a distribution system, and more particularly to en :nrangenient of automatic sul stations adapted to he interposed between a distrilnition system and sources oi' power, and arranged to lieep the supply practically uninterrupted.

With certain systems of distribution it is Ury desirable that there shall he practically no interruption in Athe supplj,7 ot power. This is especially true when such apparatus as motor-driven lire pun'ips, electrically-ops crateri. raiiway signals, and the like, is supplied. from the system in question. To avoit this possi'hilit)v of a failure ot' power, it is soinetin'ies possible to provide connections :from a plurality of sources to the distribution system, switches being provided so that any el" those soarcesinay he connected .to the system. Upon the Jfailure of `one source supply, it is disconnected andanother source connected. Where this is done manually, eon'nininieation between the switehine points is necessary, and raluahie time inaj he lost.

Aocorhngly, the object ol roy ii vention is to [Advise a system embodying automatic snbstetions which are interposed between various senr/ees of power and a distribution system, said suhstations embodying 'switehi e Fei/'ieee so arranged that the sys "e antonnlticaliy connected to a h alive, and to onli one source. .i ernioie, it may he desirable, 'where the sources of suppl/tY are owned hy dilerent companies, or for seine other reason, to al- .Ways connect the system to a particular source, if that source is alive; and if it dead, to .an-.other particular source.

lt is, therefore, another object of I rention to erstem that the time i nii i .sift-'i` the various switehino; novices is dillere t for each de 1. result that lh action is pret? my in- Further ohllcots of in pear. e ooi Specification of Letters Patent.

1915. Serial No. 27,540.

description, take in connection with the :wcoinpanying drawings, in which- Figure .l is a plan view of the operating mechanism for a switching` derive for one of nrtY automatic suhstations; Fig. is a side elevation of the saine; Fig. 3 is a dia grannnatic perspective View of this inechanisiu; Fig. l is a diagram of the electrical connections employed.

For the puriose of carrying out the desii-ed operations ot' my novel sif'stein, a special forni oi switch operating' mechanism ha.' been devised, and. I will irst describe this mechanism, and will show how Vit was applied in my system. The actuating meehanisin may he agplicd to any desired style of switch, and power for driringg` the sa e is supplied hy means oli a niotor l0 connected with a worin'and njcar ll hy means ol a flexible coupling ll Eccentrically mounted upon the shaft of this .gearis an operating` pawl l2, while c niceutrically mounted thereon is a holding pawl 133. These pawls are arranged to engage the teeth of a ratchet 14, which is suitably inounted to rotate on any conrfniient pivot, and .is spring-pressed in a clockwise direction. This ratchet is provided with an outwardl wcxtentlinY luO des ned to cooperate with a nose lo upon the sleeve 1.7, which may conreniently he mounted to rotate on the saine pivot as the ratchet lele. The sleeve ll' is connected, hy ineens of a series of crahh arn'is and links, with the actuatingr arm 1S, which in turn connected with thc operating.,Y linli'll directly (,:onncctcd to the switch so that a downward movement oi the link ll eilieets the closing ot the switch.

The operating arxn l is-hcld in its lowerniost'positimi hy moans of a holding latch 20 whichcngages with a roller mounted on said arm., the latch 20 being h .ld in engagement with the roller hy gravit The inon tion oil this holdin;r latch is limited in a countcrclocliwisc dircrtion hy incans ot' a nose 2l (see Fig. El which ahuts against the heee oi' the apparatus. When the latch 2O rotates into its holding` position, the outeiI end oi: its lower arni engages with an upstnding trip latrh i252, which is provided with a se ting ringer and a tripping iinger 2%, and, as will he seen troni .Fi l, is oiisct .troni these lingers. This latch is hroug lt into operativc posith'ni positively hy engagement et the iower`ar1n l l ping" K ig.; the, two mg@ x .4@ sez-ichl m" 'mvs M ig. E). Ths'm- "The'mgn 0T vili be similarly rotated. to perl@ MEQ wm 1s pzovded vfn a ma' prof mtl e opening aha positive Switch 3Q. mfr-v which in h@ inizd posiml of im mechanism in queson succeedg in n (afhmzm, abuis against nu ddjutue abusiva' the cmresp-udmg swbch hen @they WH i upon tre ,si

posed between said sources and said systein, means responsive to an electrical condition of said system controlling the operation of said devices, and means for preventing the closure of more than one switch.

The combination of a distribution system, a plurality of sources of power, automatically operated switching devices interposed between said sources and said system, means, comprising a relay responsive to the voltage of said system, for operating said switches when the voltage is substantially different. from normal, and means responsive to the voltage of said system f or rendering said operating means ineffective when the voltage is substantially normal.

I *4. The combinationlof a distribution system,` a. pliiralityof sources lof power, automatically operated switching devices inter posed between said sources and said system, means, comprising a relay responsive to the voltage of said system, for operating said switches when the voltage is substantially .different from normal, means responsive to mechanisms for said switching devices arranged to be energized from the associated source, relay switches responsive to the voltage of said system arranged to energize an operating mechanism upon a failure of voltage on said system,` switches in parallel with said relay switchesv and controlled by the movement of its controlling operating mechanisms, holding latches for saidswitching devices, low-voltage trip coils for said latches, and means associated with each switching device responsive to a predetermined potential Adifference on said system for rendering said operating mechanism ineffective. l l

6. The combination of a distribution system, a plurality of sources of power, switching devices interposed between said system and said sources, electrical operating mechanisms for said switching devices arranged to -be energizedY from the associated source, relay switches responsive to the voltage of said systemv arranged to energize afn operating mechanism upon a failure ofi voltage on said system, switches in parallel with said relay switches and controlled by the movement of its controlling operating mechanisms, holding latches for said switching devices, low-voltage trip coils for Vsaid latches, means associated with' said switching devices responsive to a predetermined potential dilfereiiee on said system for rendering said operating mechanisms ineffective, and means for varying the'time for closure of each switching device. 1

In witness whereof, I have hereunto SetV lVitnesses JOHN Gr.A LEARNED, C. R. BENNETT. 

